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190405741903 = 13171945345497
BaseRepresentation
bin1011000101010100010…
…0010000110101001111
3200012110200222212121221
42301111010100311033
511104422332220103
6223245435504211
716520301050026
oct2612504206517
9605420885557
10190405741903
1173829094083
1230a9a5b8067
1314c55703990
149303bb98bd
154e460111bd
hex2c55110d4f

190405741903 has 16 divisors (see below), whose sum is σ = 228541309920. Its totient is φ = 156714034176.

The previous prime is 190405741871. The next prime is 190405741907. The reversal of 190405741903 is 309147504091.

It is a cyclic number.

It is not a de Polignac number, because 190405741903 - 25 = 190405741871 is a prime.

It is a super-2 number, since 2×1904057419032 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190405741903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190405741907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22668550 + ... + 22676947.

It is an arithmetic number, because the mean of its divisors is an integer number (14283831870).

Almost surely, 2190405741903 is an apocalyptic number.

190405741903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

190405741903 is a deficient number, since it is larger than the sum of its proper divisors (38135568017).

190405741903 is a wasteful number, since it uses less digits than its factorization.

190405741903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45345546.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 190405741903 in words is "one hundred ninety billion, four hundred five million, seven hundred forty-one thousand, nine hundred three".

Divisors: 1 13 17 19 221 247 323 4199 45345497 589491461 770873449 861564443 10021354837 11200337759 14646595531 190405741903